EP0035925A1 - 3-Chloroquinoline derivatives, processes for their preparation and medicaments containing them - Google Patents

3-Chloroquinoline derivatives, processes for their preparation and medicaments containing them Download PDF

Info

Publication number
EP0035925A1
EP0035925A1 EP81400283A EP81400283A EP0035925A1 EP 0035925 A1 EP0035925 A1 EP 0035925A1 EP 81400283 A EP81400283 A EP 81400283A EP 81400283 A EP81400283 A EP 81400283A EP 0035925 A1 EP0035925 A1 EP 0035925A1
Authority
EP
European Patent Office
Prior art keywords
carbon atoms
formula
group
alkyl
ppm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81400283A
Other languages
German (de)
French (fr)
Other versions
EP0035925B1 (en
Inventor
Alain André Champseix
Gérard Roger Le Fur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pharmuka Laboratoires SA
Original Assignee
Pharmuka Laboratoires SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pharmuka Laboratoires SA filed Critical Pharmuka Laboratoires SA
Publication of EP0035925A1 publication Critical patent/EP0035925A1/en
Application granted granted Critical
Publication of EP0035925B1 publication Critical patent/EP0035925B1/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D401/00Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/06Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00Drugs for disorders of the nervous system
    • A61P25/20Hypnotics; Sedatives

Definitions

  • the present invention relates to new 3-chloro quinoline derivatives which can be used as medicaments.
  • X is fixed in position 5, 6, 7 or 8 on the quinoline ring and represents a hydrogen or halogen atom (chlorine, fluorine, bromine, iodine) or an alkyl, alkoxy or alkylthio group having 1 with 4 carbon atoms,
  • one of the substituents R1 and R 2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a phenyl group or a phenyl group substituted by one or two substituents taken from the halogen atoms (chlorine, fluorine, bromine, iodine), the alkyl, alkoxy or alkylthio groups having 1 to 4 carbon atoms, the trifluoromethyl group, the nitro group, the amino group and the amino group substituted by one or two alkyl groups having 1 or 2 atoms carbon, and the other is a piperidylalkyl group of formula: where n is an integer equal to 1, 2 or 3, R is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and the radical (CH2) n is attached in position 2, 3 or 4 on the piperidine ring.
  • halogen atoms chlorine, fluorine, bromine, iodine
  • X is preferably a hydrogen atom
  • R 2 is preferably a hydrogen atom or a methyl or phenyl group
  • R 1 is preferably a group of formula:
  • R ' 2 and R' 1 represent a hydrogen atom , an alkyl group having 1 to 4 carbon atoms, a phenyl group or a phenyl group substituted by one or two substituents chosen from halogen atoms, alkyl, alkoxy or alkylthio groups having 1 to 4 carbon atoms, CF 3 , NO 2 , NH 2 and the amino group substituted by one or two alkyl groups having 1 or 2 carbon atoms.
  • indole derivatives of formulas (II) and (IIa) are known compounds or which can be prepared by known methods (cf. for example: DeGraw et al, J. Heterocyclic Chem. 3 (1) , 67-69, 1966; Tacconi et al, Farmaco (Pavia), Ed. Sci. 20 (7), 470-481, 1965; Gray et al, Journal of Organic Chemistry, 26, 3368-3372, 1961; English patent 1,023,781; French patent for medicine 1693 M; French patent 2,334,358).
  • reactions (1) and (lbis) is prepared "in situ" by the action of a base on chloroform.
  • Reactions (1) and (ibis) can advantageously be carried out by stirring a solution or a suspension of the indole derivative of formula (II) or (II bis) in chloroform with an aqueous solution of sodium hydroxide (in particular a solution aqueous at 50% sodium hydroxide), in the presence of a quaternary ammonium salt such as benzyltriethylammonium chloride for example.
  • the hydrolysis reaction (2) can be carried out by heating, preferably at boiling point, the intermediate compound of formula (III) or (III bis) in an aqueous solution of an acid such as hydrochloric acid or l 'sulfuric acid.
  • the compounds of general formula (I) for which R is an alkyl group can be prepared by the action of an alkylating agent, such as an alkyl halide of formula RC1 or RBr, on the corresponding compounds of formula (I) for which R is a hydrogen atom:
  • an alkylating agent such as an alkyl halide of formula RC1 or RBr
  • the alkylation reaction is carried out according to methods known per se (cf. RB Wagner and HD Zook, Synthetic Organic Chemistry, p. 666, J. Wiley and Sons, 1965). It is advantageously carried out in the presence of an organic or inorganic base (for example sodium or potassium carbonate) in an inert solvent such as dimethylformamide.
  • the compounds of general formula (I) for which R is an alkyl group are preferably prepared by a two-step process which consists in reacting in a first time the corresponding compounds of formula (1) for which R is a hydrogen atom with a compound of formula in which Z represents an alkyl group having 1 to 3 carbon atoms or a low alkoxy group (for example methoxy or ethoxy), and then reducing by means of a hydride the compounds of formula (IV) or (IV bis) thus obtained.
  • the reaction scheme is as follows:
  • R ' 1 and R' 2 have the meanings indicated above, and X and n have the same meanings as in formula (I).
  • Reaction (4) also uses known methods (cf. for example R.B. Wagner and H.D. Zook, Synthetic Organic Chemistry, p. 660, J. Wiley and Sons, 1953).
  • reducing hydride aluminum hydride and lithium or other complex hydrides such as sodium hydride and bis (2-methoxyethoxy) aluminum, in an inert solvent such as ether or an aromatic hydrocarbon.
  • the group -CO-Z is transformed into a group -CH2-Z in the case where Z is an alkyl group, and into a methyl group in the case where Z is a low alkoxy group.
  • reaction mixtures obtained by the various processes described above are treated according to conventional, physical (evaporation, extraction using a solvent, distillation, crystallization, chromatography, etc.) or chemical (salt formation and regeneration) methods. base, etc.) in order to isolate the compounds of formula (I) in the pure state.
  • the compounds of formula (I) in the form of the free base can optionally be converted into addition salts with a mineral or organic acid by the action of such an acid in an appropriate solvent.
  • Benzodiazepine class drugs are used as anticonvulsants, hypnotics and for the treatment of anxiety states and various psychoneurotic states.
  • the presence of specific benzodiazepine receptors in the membranes of the rat brain has been demonstrated [SQUIRES et al., Nature, 266, (1977), 732J and the degree of affinity of benzodiazepines for these receptors, degree of affinity measured by their ability to displace tritiated Diazepam from its binding sites is in good correlation with the pharmacodynamic effects observed in animals and in humans.
  • the products of the invention although of different structure from those of benzodiazepines, displace Diazepam from its binding sites. They can therefore find applications as hypnotics, as anticonvulsants, and in the treatment of states of tension and anxiety resulting from "stressful" circumstances or somatic disorders linked to emotional factors. They can be used for the treatment of psychoneurotic states manifested by symptoms of anxiety, apprehension, fatigue, agitation or depression.
  • the following examples illustrate the invention without limiting it.
  • the data relating to nuclear magnetic resonance spectra (abbreviated: R.M.N. spectra) appearing in these examples relate to the nuclear magnetic resonance of the protons of the compounds in the basic state.
  • R.M.N. spectra The reference used is tetramethylsilane.
  • Example 2 The procedure is as in Example 1, starting with 8.3 g of (indolyl-2) -2 ethyl] -4 piperidine and 0.18 g of triethylbenzylammonium chloride in 90 ml of chloroform, and 11 g of sodium hydroxide dissolved in 22 ml of water. 1.45 g of chloro-3 [(piperidyl-4) -2 ethyl] -2 quino - leine are obtained, the monohydrochloride melts at 162 ° C.
  • Example 2 The procedure is as in Example 1, starting with 3.8 g of [(indolyl-3) -2 ethyl] -3 piperidine and 0.075 g of benzyltriethylammonium chloride in 40 ml of chloroform, and 5 g of sodium hydroxide in 10 ml of water. 1.3 g of chloro-3 [(piperidyl-3) -2 ethyl] -4 quinoline are finally obtained, in the form of monohydrochloride dihydrate, melting at 75 ° C.
  • Indolyl-3 (3-piperidyl methyl) ketone can be prepared by the process described in French patent 2,334,358.
  • 0.38 g of aluminum and lithium hydride are gradually introduced, in portions, into 20 ml of dry tetrahydrofuran, under a nitrogen atmosphere.
  • the suspension obtained is cooled to 0 ° C., then a solution of 1.6 g of 3-chloro-6-methoxy-6 [(ethoxycarbonyl-1-piperidyl-4) -2 ethyl] -4 quinoline is added dropwise. in tetrahydrofuran.
  • the reaction medium is maintained for 3 hours in an ice bath, then 0.45 ml of water, 0.33 ml of a 5N aqueous sodium hydroxide solution and very slowly and in order are added. ml of water.
  • C represents the concentration of 3 H Diazepam
  • K an affinity constant equal to 2.74 ⁇ M
  • IC 50 the concentration necessary to obtain a 50% inhibition of the binding of 3 H Diazepam.
  • the acute toxicities of the compounds according to the invention were determined in the male CD 1 mouse (Charles RIVER) orally.
  • the LD50s were calculated, after 3 days of observation, by the cumulative method of JJ REED and H. MUENCH (Amer. J. Hyg. 1938, 27, 493).
  • the compounds according to the invention behave like relatively non-toxic substances in mice, since the LD50 of the compounds are between 200 and 1000 mg / kg.
  • the compounds of the invention and their pharmaceutically acceptable salts can be used in human therapy, in the form of tablets, capsules, capsules, suppositories, ingestible or injectable solutions, etc. as hypnotics, anticonvulsants and for the treatment of states of anxiety and various psychoneurotic states.
  • the dosage depends on the desired effects and the route of administration used. For example, orally, it can be between 5 and 250 mg of active substance per day, with unit doses ranging from 1 to 50 mg.

Abstract

Composés, utiles comme médicaments, de formule: <IMAGE> dans laquelle X est hydrogène, halogène, alkyle 1-4 C, alcoxy 1-4 C ou alkylthio 1-4 C, l'un des substituants R1 et R2 est hydrogène, alkyl 1-4 C, phényle ou phényle substitué par halogène, alkyle 1-4 C, alcoxy 1-4 C, alkylthio 1-4 C, CF3, NO2, NH2 ou amino substitué par un ou deux groupes alkyle 1-2 C, et l'autre est un groupe de formule <IMAGE> dans laquelle n est 1,2 ou 3 et R est hydrogène ou alkyle 1-4 C.Compounds, useful as medicaments, of formula: <IMAGE> in which X is hydrogen, halogen, 1-4 C alkyl, 1-4 C alkoxy or 1-4 C alkylthio, one of the substituents R1 and R2 is hydrogen, alkyl 1-4 C, phenyl or phenyl substituted by halogen, 1-4 C alkyl, 1-4 C alkoxy, 1-4 C alkylthio, CF3, NO2, NH2 or amino substituted by one or two 1-2 C alkyl groups, and the other is a group of formula <IMAGE> in which n is 1,2 or 3 and R is hydrogen or 1-4 C alkyl.

Description

La présente invention a pour objet de nouveaux dérivés de la chloro-3 quinoléine utilisables comme médicaments.The present invention relates to new 3-chloro quinoline derivatives which can be used as medicaments.

Ces dérivés peuvent être représentés par la formule générale:

Figure imgb0001
dans laquelle X est fixé en position 5, 6, 7 ou 8 sur le cycle de la quinoléine et représente un atome d'hydrogène ou d'halogène (chlore, fluor, brome, iode) ou un groupe alkyle, alcoxy ou alkylthio ayant 1 à 4 atomes de carbone,These derivatives can be represented by the general formula:
Figure imgb0001
in which X is fixed in position 5, 6, 7 or 8 on the quinoline ring and represents a hydrogen or halogen atom (chlorine, fluorine, bromine, iodine) or an alkyl, alkoxy or alkylthio group having 1 with 4 carbon atoms,

l'un des substituants R1 et R2 est un atome d'hydrogène, un groupe alkyle ayant 1 à 4 atomes de carbone, un groupe phényle ou un groupe phényle substitué par un ou deux substituants pris parmi les atomes d'halogène (chlore, fluor, brome, iode), les groupes alkyle, alcoxy ou alkylthio ayant 1 à 4 atomes de carbone, le groupe trifluorométhyle, le groupe nitro, le groupe amino et le groupe amino substitué par un ou deux groupes alkyle ayant 1 ou 2 atomes de carbone, et l'autre est un groupe pipéridylalkyle de formule :

Figure imgb0002
dans laquelle n est un nombre entier égal à 1, 2 ou 3, R est un atome d'hydrogène ou un groupe alkyle ayant 1 à 4 atomes de carbone, et le radical (CH2)n est fixé en position 2, 3 ou 4 sur le cycle pipéridinique.one of the substituents R1 and R 2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a phenyl group or a phenyl group substituted by one or two substituents taken from the halogen atoms (chlorine, fluorine, bromine, iodine), the alkyl, alkoxy or alkylthio groups having 1 to 4 carbon atoms, the trifluoromethyl group, the nitro group, the amino group and the amino group substituted by one or two alkyl groups having 1 or 2 atoms carbon, and the other is a piperidylalkyl group of formula:
Figure imgb0002
where n is an integer equal to 1, 2 or 3, R is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and the radical (CH2) n is attached in position 2, 3 or 4 on the piperidine ring.

Dans la formule (I) précédente, X est de préférence un atome d'hydrogène, R2 est de préférence un atome d'hydrogène ou un groupe méthyle ou phényle, et R1 est de préférence un groupe de formule :

Figure imgb0003
In the above formula (I), X is preferably a hydrogen atom, R 2 is preferably a hydrogen atom or a methyl or phenyl group, and R 1 is preferably a group of formula:
Figure imgb0003

Les composés de formule générale (I) pour lesquels R est un atome d'hydrogène peuvent être préparés par action du dichlorocarbène : CC12 sur les dérivés de l'indole de formule (II) ou (II bis) et hydrolyse des dérivés N-formylés de formule (III) ou (III bis) ainsi obtenus, selon le schéma réactionnel suivant :

Figure imgb0004
ou
Figure imgb0005
Figure imgb0006
The compounds of general formula (I) for which R is a hydrogen atom can be prepared by the action of dichlorocarbene: CC1 2 on the indole derivatives of formula (II) or (II bis) and hydrolysis of the N- derivatives formylates of formula (III) or (III bis) thus obtained, according to the following reaction scheme:
Figure imgb0004
or
Figure imgb0005
Figure imgb0006

Dans les formules (II), (II bis), (III) et (III bis), X et n ont les mêmes significations que dans la formule (I), et R'2 et R'1 représentent un atome d'hydrogène, un groupe alkyle ayant 1 à 4 atomes de carbone, un groupe phényle ou un groupe phényle substitué par un ou deux substituants pris parmi les atomes d'halogène, les groupes alkyle, alcoxy ou alkylthio ayant 1 à 4 atomes de carbone, CF3, N02, NH2 et le groupe amino substitué par un ou deux groupes alkyle ayant 1 ou 2 atomes de carbone.In formulas (II), (II bis), (III) and (III bis), X and n have the same meanings as in formula (I), and R ' 2 and R' 1 represent a hydrogen atom , an alkyl group having 1 to 4 carbon atoms, a phenyl group or a phenyl group substituted by one or two substituents chosen from halogen atoms, alkyl, alkoxy or alkylthio groups having 1 to 4 carbon atoms, CF 3 , NO 2 , NH 2 and the amino group substituted by one or two alkyl groups having 1 or 2 carbon atoms.

Les dérivés de l'indole de formules (II) et (II bis) sont des composés connus ou que l'on peut préparer par des procédés connus (cf. par exemple : DeGraw et al, J. Heterocyclic Chem. 3 (1), 67-69, 1966 ; Tacconi et al, Farmaco (Pavia), Ed. Sci. 20(7), 470-481, 1965 ; Gray et al, Journal of Organic Chemistry, 26, 3368-3372, 1961 ; brevet anglais 1 023 781 ; brevet français de médicament 1693 M ; brevet français 2 334 358).The indole derivatives of formulas (II) and (IIa) are known compounds or which can be prepared by known methods (cf. for example: DeGraw et al, J. Heterocyclic Chem. 3 (1) , 67-69, 1966; Tacconi et al, Farmaco (Pavia), Ed. Sci. 20 (7), 470-481, 1965; Gray et al, Journal of Organic Chemistry, 26, 3368-3372, 1961; English patent 1,023,781; French patent for medicine 1693 M; French patent 2,334,358).

Le dichlorocarbène utilisé dans les réactions (1) et (lbis) est préparé "in situ" par action d'une base sur le chloroforme. Les réactions (1) et(ibis) peuvent être réalisées avantageusement en agitant une solution ou une suspension du dérivé indolique de formule (II) ou (II bis) dans le chloroforme avec une solution aqueuse d'hydroxyde de sodium (en particulier une solution aqueuse à 50% d'hydroxyde de sodium), en présence d'un sel d'ammonium quaternaire tel que le chlorure de benzyltriéthylammonium par exemple.The dichlorocarbene used in reactions (1) and (lbis) is prepared "in situ" by the action of a base on chloroform. Reactions (1) and (ibis) can advantageously be carried out by stirring a solution or a suspension of the indole derivative of formula (II) or (II bis) in chloroform with an aqueous solution of sodium hydroxide (in particular a solution aqueous at 50% sodium hydroxide), in the presence of a quaternary ammonium salt such as benzyltriethylammonium chloride for example.

La réaction d'hydrolyse (2) peut être effectuée par chauffage, de préférence à l'ébullition, du composé intermédiaire de formule (III) ou (III bis) dans une solution aqueuse d'un acide tel que l'acide chlorhydrique ou l'acide sulfurique.The hydrolysis reaction (2) can be carried out by heating, preferably at boiling point, the intermediate compound of formula (III) or (III bis) in an aqueous solution of an acid such as hydrochloric acid or l 'sulfuric acid.

Les composés de formule générale (I) pour lesquels R est un groupe alkyle peuvent être préparés par action d'un agent alkylant, tel qu'un halogénure d'alkyle de formule RC1 ou RBr, sur les composés correspondants de formule (I) pour lesquels R est un atome d'hydrogène: La réaction d'alkyla- tion est effectuée selon des procédés connus en soi (cf. R.B. Wagner et H.D. Zook, Synthetic Organic Chemistry, p. 666, J. Wiley and Sons, 1965). On opère avantageusement en présence d'une base organique ou minérale (par exemple le carbonate de sodium ou de potassium) au sein d'un solvant inerte tel que le diméthylformamide.The compounds of general formula (I) for which R is an alkyl group can be prepared by the action of an alkylating agent, such as an alkyl halide of formula RC1 or RBr, on the corresponding compounds of formula (I) for which R is a hydrogen atom: The alkylation reaction is carried out according to methods known per se (cf. RB Wagner and HD Zook, Synthetic Organic Chemistry, p. 666, J. Wiley and Sons, 1965). It is advantageously carried out in the presence of an organic or inorganic base (for example sodium or potassium carbonate) in an inert solvent such as dimethylformamide.

Les composés de formule générale (I) pour lesquels R est un groupe alkyle sont préparés de préférence par un procédé en deux étapes qui consiste à faire réagir dans un premier temps les composés correspondants de formule (1) pour lesquels R est un atome d'hydrogène avec un composé de formule

Figure imgb0007
dans laquelle Z représente un groupe alkyle ayant 1 à 3 atomes de carbone ou un groupe alcoxy bas (par exemple méthoxy ou éthoxy), et à réduire ensuite au moyen d'un hydrure les composés de formule (IV) ou (IV bis) ainsi obtenus. Le schéma réactionnel est le suivant :
Figure imgb0008
Figure imgb0009
Figure imgb0010
The compounds of general formula (I) for which R is an alkyl group are preferably prepared by a two-step process which consists in reacting in a first time the corresponding compounds of formula (1) for which R is a hydrogen atom with a compound of formula
Figure imgb0007
in which Z represents an alkyl group having 1 to 3 carbon atoms or a low alkoxy group (for example methoxy or ethoxy), and then reducing by means of a hydride the compounds of formula (IV) or (IV bis) thus obtained. The reaction scheme is as follows:
Figure imgb0008
Figure imgb0009
Figure imgb0010

Dans les formules intervenant dans le schéma réactionnel ci-dessus, R'1 et R'2 ont les significations indiquées précédemment, et X et n ont les mêmes significations que dans la formule (I).In the formulas involved in the reaction scheme above, R ' 1 and R' 2 have the meanings indicated above, and X and n have the same meanings as in formula (I).

Pour effectuer les réactions (3) et (3) bis, on utilise des méthodes, connues en soi, qui permettent de transformer une amine secondaire en amide (cas Z = alkyle) ou en carbamate (cas Z = alcoxy), par exemple celles décrites par R.B. Wagner et H.D. Zook (Synthetic Organic Chemistry, p. 565 et p. 646, J. Wiley and Sons, 1953). On opère-généralement en présence d'une base telle que l'hydroxyde de sodium en solution aqueuse ou la triéthylamine, au sein d'un solvant inerte tel que le chloroforme ou le trichlo- ro-1,1,1 éthane, à une température comprise entre O°C et 30°C.To carry out reactions (3) and (3) bis, methods known per se are used which make it possible to transform a secondary amine into an amide (case Z = alkyl) or into a carbamate (case Z = alkoxy), for example those described by RB Wagner and HD Zook (Synthetic Organic Chemistry, p. 565 and p. 646, J. Wiley and Sons, 1953). The operation is generally carried out in the presence of a base such as sodium hydroxide in aqueous solution or triethylamine, in an inert solvent such as chloroform or trichloro-1,1,1 ethane, at a temperature between O ° C and 30 ° C.

La réaction (4) utilise également des méthodes connues (cf. par exemple R.B. Wagner et H.D. Zook, Synthetic Organic Chemistry, p. 660, J. Wiley and Sons, 1953). On utilise avantageusement comme hydrure réducteur l'hydrure d'aluminium et de lithium ou d'autres hydrures complexes tels que l'hydrure de sodium et de bis (méthoxy-2 éthoxy) aluminium, au sein d'un solvant inerte tel qu'un éther ou un hydrocarbure aromatique. Dans la réaction (4) le groupe -CO-Z est transformé en groupe -CH2-Z dans le cas où Z est un groupe alkyle, et en groupe méthyle dans le cas où Z est un groupe alcoxy bas.Reaction (4) also uses known methods (cf. for example R.B. Wagner and H.D. Zook, Synthetic Organic Chemistry, p. 660, J. Wiley and Sons, 1953). Advantageously used as reducing hydride aluminum hydride and lithium or other complex hydrides such as sodium hydride and bis (2-methoxyethoxy) aluminum, in an inert solvent such as ether or an aromatic hydrocarbon. In reaction (4) the group -CO-Z is transformed into a group -CH2-Z in the case where Z is an alkyl group, and into a methyl group in the case where Z is a low alkoxy group.

Les mélanges réactionnels obtenus par les divers procédés décrits précédemment sont traités suivant des méthodes classiques, physiques (évaporation, extraction à l'aide d'un solvant, distillation, cristallisation, chromatographie, etc...) ou chimiques (formation de sel et régénération de la base, etc...) afin d'isoler les composés de formule (I) à l'état pur.The reaction mixtures obtained by the various processes described above are treated according to conventional, physical (evaporation, extraction using a solvent, distillation, crystallization, chromatography, etc.) or chemical (salt formation and regeneration) methods. base, etc.) in order to isolate the compounds of formula (I) in the pure state.

Les composés de formule (I) sous forme de base libre peuvent éventuellement être transformés en sels d'addition avec un acide minéral ou organique par action d'un tel acide au sein d'un solvant approprié.The compounds of formula (I) in the form of the free base can optionally be converted into addition salts with a mineral or organic acid by the action of such an acid in an appropriate solvent.

Les médicaments de la classe des benzodiazépines sont utilisés comme anticonvulsivants, comme hypnotiques et pour le traitement des états d'anxiété et de divers états psychonévrotiques. La présence de récepteurs spécifiques des benzodiazépines dans les membranes de cerveau de rat a été démontrée [SQUIRES et Coll., Nature, 266, (1977), 732J et le degré d'affinité des benzodiazépines pour ces récepteurs, degré d'affinité mesuré par leur aptitude à déplacer de ses sites de liaison le Diazépam tritié, est en bonne corrélation avec les effets pharmacodynamiques observés chez l'animal et chez l'homme.Benzodiazepine class drugs are used as anticonvulsants, hypnotics and for the treatment of anxiety states and various psychoneurotic states. The presence of specific benzodiazepine receptors in the membranes of the rat brain has been demonstrated [SQUIRES et al., Nature, 266, (1977), 732J and the degree of affinity of benzodiazepines for these receptors, degree of affinity measured by their ability to displace tritiated Diazepam from its binding sites is in good correlation with the pharmacodynamic effects observed in animals and in humans.

Jusqu'à ce jour, en dehors des benzodiazépines, aucun médicament agissant par ailleurs sur le système nerveux central ne s'est montré capable de déplacer, de manière significative, le Diazépam de ses sites de liaison [cf, BRAESTRUP et Coll., Europ. J. Pharmacol. 48, (1978) 26].To date, apart from benzodiazepines, no drug acting otherwise on the central nervous system has been shown to be able to significantly displace Diazepam from its binding sites [cf, BRAESTRUP et al., Europ . J. Pharmacol. 48, (1978) 26].

Les produits de l'invention, bien que de structure différente de celles des benzodiazépines, déplacent le Diazépam de ses sites de liaison. Ils peuvent donc trouver des applications comme hypnotiques, comme anticonvulsivants, et dans le traitement des états de tension et d'anxiété résultant de circonstances "stressantes" ou de troubles somatiques liés à des facteurs émotionnels. Ils sont utilisables pour le traitement des états psychonévrotiques se manifestant par des symptômes d'anxiété, d'appréhension, de fatigue, d'agitation ou de dépression.The products of the invention, although of different structure from those of benzodiazepines, displace Diazepam from its binding sites. They can therefore find applications as hypnotics, as anticonvulsants, and in the treatment of states of tension and anxiety resulting from "stressful" circumstances or somatic disorders linked to emotional factors. They can be used for the treatment of psychoneurotic states manifested by symptoms of anxiety, apprehension, fatigue, agitation or depression.

Les exemples suivants illustrent l'invention sans la limiter. Les données relatives aux spectres de résonance magnétique nucléaire (en abrégé : spectres R.M.N.) figurant dans ces exemples concernent la résonance magnétique nucléaire des protons des composés à l'état de base. Pour effectuer les mesures de résonance magnétique nucléaire, les composés sont mis en solution dans le chloroforme deutéré. La référence utilisée est le tétraméthylsilane.The following examples illustrate the invention without limiting it. The data relating to nuclear magnetic resonance spectra (abbreviated: R.M.N. spectra) appearing in these examples relate to the nuclear magnetic resonance of the protons of the compounds in the basic state. To carry out nuclear magnetic resonance measurements, the compounds are dissolved in deuterated chloroform. The reference used is tetramethylsilane.

EXEMPLE 1 : Chloro-3 [(pipéridyl-4)-2 éthyl]-4 quinoléineEXAMPLE 1 Chloro-3 [(piperidyl-4) -2 ethyl] -4 quinoline

A une suspension bien agitée de 45,8 g d' [(indolyl-3)-2 éthyl] -4 pipéridine et 1 g de chlorure de benzyltriéthylammonium dans 500 ml de chloroforme exempt d'éthanol, on ajoute lentement, en deux heures, en maintenant à la température ambiante (environ 20°C), une solution de 60 g d'hydroxyde de sodium dans 120 ml d'eau. La dissolution est progressive. Après 72 heures à température ambiante, on sépare les deux phases par décantation. La phase aqueuse est extraite par deux fois 100 ml de chloroforme. Les phases organiques sont rassemblées et concentrées par élimination du chloroforme.To a well-stirred suspension of 45.8 g of [(indolyl-3) -2 ethyl ] -4 piperidine and 1 g of benzyltriethylammonium chloride in 500 ml of ethanol-free chloroform, slowly added over two hours, now at room temperature (about 20 ° C), a solution of 60 g of sodium hydroxide in 120 ml of water. The dissolution is progressive. After 72 hours at room temperature, the two phases are separated by decantation. The aqueous phase is extracted with twice 100 ml of chloroform. The organic phases are combined and concentrated by elimination of the chloroform.

Le résidu obtenu est chauffé au reflux pendant une heure dans 400 ml d'une solution aqueuse 5N d'acide chlorhydrique. Après refroidissement à 0°C, on alcalinise au moyen de 250 ml d'une solution aqueuse ION d'hydroxyde de sodium, puis on extrait par 300 ml de chloroforme. La phase organique est lavée par 500 ml d'eau, séchée sur sulfate de magnésium, puis concentrée par élimination du chloroforme. On obtient ainsi 61,2 g d'un produit huileux. Ce produit est fixé sur colonne de silice, puis on élue par un mélange chloroforme-diéthylami- ne

Figure imgb0011
, On obtient 25 g de chloro-3 [(pipéridyl-4)-2 éthyll -4 quinoléine, dont le chlorohydrate fond à 190°C.The residue obtained is heated at reflux for one hour in 400 ml of a 5N aqueous solution of hydrochloric acid. After cooling to 0 ° C., basification is carried out with 250 ml of an aqueous ION sodium hydroxide solution, then extraction is carried out with 300 ml of chloroform. The organic phase is washed with 500 ml of water, dried over magnesium sulphate, then concentrated by elimination of chloroform. 61.2 g of an oily product are thus obtained. This product is fixed on a silica column, then eluted with a chloroform-diethylamine mixture
Figure imgb0011
, 25 g of chloro-3 [(piperidyl-4) -2 ethyll -4 quinoline are obtained, the hydrochloride of which melts at 190 ° C.

Spectre R.M.N. du produit obtenu :

  • Les déplacements chimiques odes protons sont les suivants :
    • - aromatiques δ: 7,3 - 8,8 ppm
    • - CH2-N et CH2-Ar δ: 2,3 - 3,4 ppm
NMR spectrum of the product obtained:
  • The chemical displacements of the protons are as follows:
    • - aromatic δ: 7.3 - 8.8 ppm
    • - CH 2 -N and CH 2 -Ar δ: 2.3 - 3.4 ppm

EXEMPLE 2 : Dichloro-3,6 [(pipéridyl-4)-2 éthyl] -4 quinoléineEXAMPLE 2 Dichloro-3,6 [(piperidyl-4) -2 ethyl] -4 quinoline

On opère comme à l'exemple 1, en partant de 11 g de [(chloro-5 indolyl-3)-2 éthyl ] -4 pipéridine et 0,21 g de chlorure de benzyltriéthylammonium en suspension dans 100 ml de chloroforme et de 12,5 g d'hydroxyde de sodium en solution dans 25 ml d'eau. On obtient finalement 2g de dichloro-3,6 [(pipéridyl-4)-2 éthyl ]-4 quinoléine sous forme de dichlorhydrate fondant à 248°C.The procedure is as in Example 1, starting with 11 g of [(5-chloro-indolyl-3) -2 ethyl] -4 piperidine and 0.21 g of benzyltriethylammonium chloride suspended in 100 ml of chloroform and 12 , 5 g of sodium hydroxide in solution in 25 ml of water. Finally, 2 g of dichloro-3,6 [(piperidyl-4) -2 ethyl] -4 quinoline are obtained in the form of dihydrochloride melting at 248 ° C.

Spectre R.M.N. du produit obtenu :

  • - aromatiques δ; 7,3 - 8,7 ppm
  • - CH2Ar et CH2N δ: 2,5 - 3,4 ppm
NMR spectrum of the product obtained:
  • - aromatics δ; 7.3 - 8.7 ppm
  • - CH 2 Ar and CH 2 N δ: 2.5 - 3.4 ppm

EXEMPLE 3 : Chloro-3 méthoxy-6 [(pipéridyl-4) -2 éthyl] -4 quinoléine.EXAMPLE 3: 3-Chloro-6-methoxy [(piperidyl-4) -2 ethyl] -4 quinoline.

On opère comme à l'exemple 1, en partant de 15 g de [(méthoxy-5 indolyl-3)-2 éthyl] -4 pipéridine et 0,25 g de chlorure de triéthylbenzylammonium dans 120 ml de chloroforme et de 18 g d'hydroxyde de sodium dans 35 ml d'eau. On obtient finalement 1,85 g de chloro-3 méthoxy-6 [(pipéridyl-4)-2 éthyl]-4 quinoléine, sous forme de dichlorhydrate fondant à 210°C.The procedure is as in Example 1, starting with 15 g of [(5-methoxy-indolyl-3) -2 ethyl] -4 piperidine and 0.25 g of triethylbenzylammonium chloride in 120 ml of chloroform and 18 g of sodium hydroxide in 35 ml of water. 1.85 g of 3-chloro-6-methoxy [(piperidyl-4) -2 ethyl] -4 quinoline are finally obtained in the form of the dihydrochloride melting at 210 ° C.

Spectre R.M.N. du produit obtenu :

  • - aromatiques δ: 7,1 - 8,7 ppm
  • - CH2N et CH2Ar δ: 2,2 - 3,4 ppm
  • - CH30 δ: 4 ppm
NMR spectrum of the product obtained:
  • - aromatic δ: 7.1 - 8.7 ppm
  • - CH 2 N and CH 2 Ar δ: 2.2 - 3.4 ppm
  • - CH 3 0 δ: 4 ppm

EXEMPLE 4 : Méthyl-2 chloro-3 [(pipéridyl-4)-2 éthyl]-4 quinoléine.EXAMPLE 4: 2-methyl-3-chloro [(piperidyl-4) -2 ethyl] -4 quinoline.

On opère comme à l'exemple 1, en partant de 5,9 g de [(méthyl-2 indolyl-3)-2 éthyl ] -4 pipéridine et 0,12 g de chlorure de triéthylbenzylammonium dans 60 ml de chloroforme et de 7,5 g d'hydroxyde de sodium dans 15 ml d'eau. On obtient finalement 2,7 g de méthyl-2 chloro-3 [(pipéridyl-4)-2 éthyl ] -4 quinoléine sous forme de monochlorhydrate qui fond à 255°C.The procedure is as in Example 1, starting with 5.9 g of [(2-methyl-indolyl-3) -2 ethyl] -4 piperidine and 0.12 g of triethylbenzylammonium chloride in 60 ml of chloroform and 7 , 5 g of sodium hydroxide in 15 ml of water. 2.7 g of methyl-2-chloro-3 [(piperidyl-4) -2 ethyl] -4 quinoline are finally obtained in the form of the monohydrochloride which melts at 255 ° C.

Spectre R.M.N. du produit obtenu :

  • - aromatiques δ: 7,4 - 8,2 ppm
  • - CH3Ar δ: 2,8 ppm
  • - CHZN et CH2Ar δ: 2,4 - 3,4 ppm
NMR spectrum of the product obtained:
  • - aromatic δ: 7.4 - 8.2 ppm
  • - CH 3 Ar δ: 2.8 ppm
  • - CH Z N and CH 2 Ar δ: 2.4 - 3.4 ppm

EXEMPLE 5 : Phényl-2 chloro-3 [(pipéridyl-4)-2 éthyl1 -4 quinoléine.EXAMPLE 5: Phenyl-2 chloro-3 [(piperidyl-4) -2 ethyl1 - 4 quinoline.

On opère comme à l'exemple 1, en partant de 12 g de [(phényl-2 indolyl-3)-2 éthyl] -4 pipéridine et 0,2 g de chlorure de triéthylbenzylammonium dans 110 ml de chloroforme et de 12 g d'hydroxyde de sodium dans 24 ml d'eau. On obtient finalement 1,05 g de phényl-2 chloro-3 [(pipéridyl-4) -2 éthyl -4 quinoléine sous forme de chlorhydrate fondant à 233°C.The procedure is as in Example 1, starting with 12 g of [(2-phenyl-indolyl-3) -2 ethyl] -4 piperidine and 0.2 g of triethylbenzylammonium chloride in 110 ml of chloroform and 12 g of sodium hydroxide in 24 ml of water. 1.05 g of 2-phenyl-3-chloro [(piperidyl-4) -2-ethyl-4-quinoline is finally obtained in the form of the hydrochloride, melting at 233 ° C.

Spectre R.M.N. du produit obtenu :

  • - aromatiques δ: 7,2 - 8,4 ppm
  • - CH2 N et CH2Ar δ: 2,2 - 3,4 ppm
NMR spectrum of the product obtained:
  • - aromatic δ: 7.2 - 8.4 ppm
  • - CH 2 N and CH 2 Ar δ: 2.2 - 3.4 ppm

La [(phényl-2 indolyl-3)-2 éthyl ]-4 pipéridine,produit de départ, a été préparée de la manière suivante :

  • Une suspension bien agitée contenant 39,5 g de [(phényl-2 indolyl-3) -2 éthyl ]-4 pyridine en solution dans 40 ml d'acide acétique et 2 g d'oxyde de platine Adams est maintenue, à la température ambiante, sous une pression d'hydrogène correspondant à une surpression de 50 mm d'eau par rapport à la pression atmosphérique, jusqu'à cessation de l'absorption de gaz.
The [(phenyl-2 indolyl-3) -2 ethyl] -4 piperidine, starting material, was prepared as follows:
  • A well-stirred suspension containing 39.5 g of [(2-phenyl-indolyl-3) -2 ethyl] -4 pyridine in solution in 40 ml of acetic acid and 2 g of Adams platinum oxide is maintained at the temperature ambient, under a hydrogen pressure corresponding to an overpressure of 50 mm of water compared to atmospheric pressure, until cessation of absorption of gas.

Le platine est ensuite séparé par filtration et la solution acétique est concentrée par évaporation. Le résidu huileux obtenu est alcalinisé par addition d'une solution aqueuse 11N d'hydroxyde de sodium et on extrait par 500 ml de chloroforme. La phase chloroformique est séchée sur sulfate de magnésium, puis concentrée par élimination du chloroforme. On obtient ainsi 37,8 g de [(phényl-2 indolyl-3)-2 éthyl] -4 pipéridine qui fond à 183°C.The platinum is then separated by filtration and the acetic solution is concentrated by evaporation. The oily residue obtained is made alkaline by adding an 11N aqueous solution of sodium hydroxide and extracted with 500 ml of chloroform. The chloroform phase is dried over magnesium sulphate, then concentrated by elimination of chlorofor me. 37.8 g of [(2-phenyl-indolyl-3) -2 ethyl] -4 piperidine are thus obtained, which melts at 183 ° C.

Spectre R.M.N. du produit obtenu :

  • - aromatiques δ: 7,2 - 7,8 ppm
  • - CH2Ar et CHN δ: : 2,4 - 3,3 ppm
NMR spectrum of the product obtained:
  • - aromatic δ: 7.2 - 7.8 ppm
  • - CH 2 Ar and CHN δ:: 2.4 - 3.3 ppm

La [(phényl-2 indolyl-3)-2 éthyl] -4 pyridine a été préparée selon la méthode de P. BRUNI, Ann. Chim. (ROME) 1967, 57(4), 376-81.[(2-Phenyl-indolyl-3) -2 ethyl] -4 pyridine was prepared according to the method of P. BRUNI, Ann. Chim. (ROME) 1967, 57 (4), 376-81.

EXEMPLE 6 : Chloro-3 [(pipéridyl-4) méthyl]-4 quinoléineEXAMPLE 6 Chloro-3 [(piperidyl-4) methyl] -4 quinoline

On opère comme à l'exemple 1, en partant de 13,4 g d'(indolyl-3 méthyl)-4 pipéridine et 0,54 g de chlorure de triéthylbenzylammonium dans 130 ml de chloroforme et de 19,5 g d'hydroxyde de sodium en solution dans 39 ml d'eau. On obtient finalement 4,2 g de chloro-3 [(pipéridyl-4). méthyl]-4 quinoléine sous forme de dichlorhydrate fondant au-dessus de 260°C.The procedure is as in Example 1, starting with 13.4 g of (3-indolyl methyl) -4 piperidine and 0.54 g of triethylbenzylammonium chloride in 130 ml of chloroform and 19.5 g of hydroxide sodium solution in 39 ml of water. Finally, 4.2 g of chloro-3 [(piperidyl-4) are obtained. methyl] -4 quinoline in the form of dihydrochloride melting above 260 ° C.

Spectre R.M.N. du produit obtenu :

  • - aromatiques δ: 7,3 - 9 ppm
  • - CH2Ar δ: 3,2 ppm
NMR spectrum of the product obtained:
  • - aromatic δ: 7.3 - 9 ppm
  • - CH 2 Ar δ: 3.2 ppm

EXEMPLE 7 : Chloro-3 méthoxy-6 [(pipéridyl-4) méthyl]-4 quinoléineEXAMPLE 7 3-Chloro-6-methoxy [(piperidyl-4) methyl] -4 quinoline

On opère comme à l'exemple 1, en partant de 10,2 g de [(méthoxy-5 indolyl-3) méthyl]-4 pipéridine et 0,21 g de chlorure de triéthylbenzylammonium dans 100 ml de chloroforme, et de 12,5 g d'hydroxyde de sodium en solution dans 25 ml d'eau. On obtient finalement 3,7 g de chloro-3 méthoxy-6 [(pipéridyl-4) méthyl]-4 quinoléine dont le monochlorhydrate fond au-dessus de 260°C.The procedure is as in Example 1, starting with 10.2 g of [(5-methoxy-indolyl-3) methyl] -4 piperidine and 0.21 g of triethylbenzylammonium chloride in 100 ml of chloroform, and 12.5 g of sodium hydroxide in solution in 25 ml of water. Finally, 3.7 g of 3-chloro-6-methoxy [(piperidyl-4) methyl] -4 quinoline are obtained, the monohydrochloride melts above 260 ° C.

Spectre R.M.N. du produit obtenu :

  • - aromatiques δ: 7,2 - 9 ppm
  • - CH3O δ : 4 ppm
  • - CH2Ar δ: 3,2 ppm
NMR spectrum of the product obtained:
  • - aromatic δ: 7.2 - 9 ppm
  • - CH 3 O δ: 4 ppm
  • - CH 2 Ar δ: 3.2 ppm

EXEMPLE 8 : Chloro-3 méthyl-8 [(pipéridyl-4) méthyl] -4 quinoléineEXAMPLE 8 Chloro-3 methyl-8 [(piperidyl-4) methyl] -4 quinoline

On opère comme à l'exemple 1, en partant de 9,5 g de [(méthyl -7 indolyl-3) méthyl ]4 pipéridine et 0,21 g de chlorure de triéthylbenzylammonium dans 100 ml de chloroforme, et de 12,5 g d'hydroxyde de sodium en solution dans 25 ml d'eau. On obtient finalement 5,1 g de chloro-3 méthyl-8 [(pipéridyl-4) méthyl] -4 quinoléine dont le monochlorhydrate fond à 252°C.The procedure is as in Example 1, starting with 9.5 g of [(methyl -7 indolyl-3) methyl] 4 piperidine and 0.21 g of triethylbenzylammonium chloride in 100 ml of chloroform, and 12.5 g of sodium hydroxide in solution in 25 ml of water. Finally, 5.1 g of 3-chloro-8 [(piperidyl-4) methyl] -4 quinoline is obtained, the monohydrochloride melts at 252 ° C.

Spectre R.M.N. du produit obtenu :

  • - aromatiques δ: 7,3 - 8,8 ppm
  • - CH3-Ar δ: 2,8 ppm
  • - CH2-Ar δ: 3,2 ppm
NMR spectrum of the product obtained:
  • - aromatic δ: 7.3 - 8.8 ppm
  • - CH 3 -Ar δ: 2.8 ppm
  • - CH 2 -Ar δ: 3.2 ppm

EXEMPLE 9 : Chloro-3 [(pipéridyl-4)-2 éthyl]-2 quinoléineEXAMPLE 9 Chloro-3 [(piperidyl-4) -2 ethyl] -2 quinoline

On opère comme à l'exemple 1, en partant de 8,3 g d' (indolyl-2)-2 éthyl]-4 pipéridine et 0,18 g de chlorure de triéthylbenzylammonium dans 90 ml de chloroforme, et de 11 g d'hydroxyde de sodium en solution dans 22 ml d'eau. On obtient 1,45 g de chloro-3 [(pipéridyl-4)-2 éthyl] -2 quino- léine dont le monochlorhydrate fond à 162°C.The procedure is as in Example 1, starting with 8.3 g of (indolyl-2) -2 ethyl] -4 piperidine and 0.18 g of triethylbenzylammonium chloride in 90 ml of chloroform, and 11 g of sodium hydroxide dissolved in 22 ml of water. 1.45 g of chloro-3 [(piperidyl-4) -2 ethyl] -2 quino - leine are obtained, the monohydrochloride melts at 162 ° C.

Spectre R.M.N. du produit obtenu :

  • - aromatiques δ: 7,4 - 8,2 ppm
  • - CH2Ar et CH2-N δ: 2,5 - 3,6 ppm
NMR spectrum of the product obtained:
  • - aromatic δ: 7.4 - 8.2 ppm
  • - CH 2 Ar and CH 2 -N δ: 2.5 - 3.6 ppm

L' [(indolyl-2)-2 éthyl] -4 pipéridine, produit de départ, peut être préparée comme suit[(Indolyl-2) -2 ethyl] -4 piperidine, starting material, can be prepared as follows

A 150 ml d'acide orthophosphorique à 85 %, bien agités, on ajoute progressivement, par portions, 300 g d'anhydride phosphorique, la température étant maintenue inférieure ou égale à 100°C par refroidissement à l'aide d'un bain d'eau. Lorsque le milieu est bien homogène, on introduit 11,4 g d' [(indolyl-3)-2 éthyl]-4 pipéridine, puis on chauffe le milieu réactionnel à 150°C pendant 45 mn. Le liquide sirupeux obtenu est introduit léntement dans 3 kg d'un mélange glace + eau, puis on amène à pH 10 par addition de 800 ml d'une solution aqueuse 11 N d'hydroxyde de sodium. On extrait quatre fois par 300 ml d'acétate d'éthyle. Les extraits sont rassemblés, lavés par 100 ml d'eau, séchés sur sulfate de magnésium et concentrés par élimination de l'acétate d'éthyle. On obtient ainsi 8,2 g d'[(indolyl-2)-2 éthyl] -4 pipéridine, qui fond à 191°C.To 150 ml of 85% orthophosphoric acid, well stirred, is gradually added, in portions, 300 g of phosphoric anhydride, the temperature being maintained less than or equal to 100 ° C by cooling using a water bath. 'water. When the medium is well homogeneous, 11.4 g of [(indolyl-3) -2 ethyl] -4 piperidine are introduced, then the reaction medium is heated to 150 ° C. for 45 min. The syrupy liquid obtained is introduced slowly into 3 kg of an ice + water mixture, then brought to pH 10 by addition of 800 ml of an 11 N aqueous solution of sodium hydroxide. Extraction is carried out four times with 300 ml of ethyl acetate. The extracts are combined, washed with 100 ml of water, dried over magnesium sulphate and concentrated by elimination of ethyl acetate. 8.2 g of [(indolyl-2) -2 ethyl] -4 piperidine are thus obtained, which melts at 191 ° C.

EXEMPLE 10 : Chloro-3 [(pipéridyl-3)-2 éthyl]-4 quinoléineEXAMPLE 10 Chloro-3 [(piperidyl-3) -2 ethyl] -4 quinoline

On opère comme à l'exemple 1, en partant de 3,8 g d'[(indolyl-3)-2 éthyl]-3 pipéridine et 0,075 g de chlorure de benzyltriéthylammonium dans 40 ml de chloroforme, et de 5 g d'hydroxyde de sodium dans 10 ml d'eau. On obtient finalement 1,3 g de chloro-3 [(pipéridyl-3)-2 éthyl ] -4 quinoléine, sous forme de monochlorhydrate dihydraté, fondant à 75°C.The procedure is as in Example 1, starting with 3.8 g of [(indolyl-3) -2 ethyl] -3 piperidine and 0.075 g of benzyltriethylammonium chloride in 40 ml of chloroform, and 5 g of sodium hydroxide in 10 ml of water. 1.3 g of chloro-3 [(piperidyl-3) -2 ethyl] -4 quinoline are finally obtained, in the form of monohydrochloride dihydrate, melting at 75 ° C.

L' [(indolyl-3)-2 éthyl] -3 pipéridine, produit de départ, peut être préparée de la manière suivante :

  • Sous atmosphère d'azote, on ajoute goutte-à-goutte, à une suspension de 3 g d'hydrure d'aluminium et de lithium dans 500 ml de dioxanne anhydre, une solution de 9,7 g d'indolyl -3 (pipéridyl-3 méthyl) cétone dans 500 ml de dioxanne anhydre. Le mélange est porté au reflux pendant 3 heures, puis on refroidit à O°C et ajoute successivement 15 ml d'eau et 24 ml d'une solution aqueuse d'hydroxyde de sodium à 15 %. Les produits minéraux insolubles formés sont séparés par filtration et le filtrat est séché sur sulfate de magnésium et évaporé. On obtient ainsi 4 g d' [(indolyl-3) -2 éthyl]-3 pipéridine, sous forme d'une huile.
[(Indolyl-3) -2 ethyl] -3 piperidine, starting material, can be prepared as follows:
  • Under a nitrogen atmosphere, a solution of 9.7 g of indolyl-3 (piperidyl) is added dropwise to a suspension of 3 g of lithium aluminum hydride in 500 ml of anhydrous dioxane -3 methyl) ketone in 500 ml of anhydrous dioxane. The mixture is brought to reflux for 3 hours, then cooled to 0 ° C. and successively added 15 ml of water and 24 ml of a 15% aqueous sodium hydroxide solution. The insoluble mineral products formed are separated by filtration and the filtrate is dried over magnesium sulfate and evaporated. 4 g of [(indolyl-3) -2 ethyl] -3 piperidine are thus obtained, in the form of an oil.

L'indolyl-3 (pipéridyl-3 méthyl) cétone peut être préparée par le procédé décrit dans le brevet français 2 334 358.Indolyl-3 (3-piperidyl methyl) ketone can be prepared by the process described in French patent 2,334,358.

EXEMPLE 11 : Chloro-3 méthoxy-6 [(méthyl-1 pipéridyl-4)-2 éthyl ] -4 quinoléine.EXAMPLE 11: 3-Chloro-6-methoxy [(1-methyl-4-piperidyl) -2 ethyl] -4 quinoline.

A une solution de 1,8 g de chloro-3 méthoxy-6 [(pipéridyl-4)-2 éthyl ] -4 quinoléine dans 6 ml de chloroforme on ajoute, sous agitation, 6 ml d'une solution aqueuse 1N d'hydroxyde de sodium, refroidie à O°C. On ajoute ensuite, goutte-à-goutte, 0,49 g de chloroformiate d'éthyle. La suspension obtenue est agitée quelques heures, puis décantée. La phase organique est lavée à l'eau, séchée sur sulfate de magnésium, puis concentrée. On obtient ainsi 1,6 g de chloro-3 méthoxy-6 [(éthoxycarbonyl-1 pipéridyl-4)-2 éthyl]- 4 quinoléine sous forme d'une huile.To a solution of 1.8 g of 3-chloro-6-methoxy [(piperidyl-4) -2 ethyl] -4 quinoline in 6 ml of chloroform is added, with stirring, 6 ml of a 1N aqueous hydroxide solution sodium, cooled to 0 ° C. 0.49 g of ethyl chloroformate is then added dropwise. The suspension obtained is stirred for a few hours, then decanted. The organic phase is washed with water, dried over magnesium sulfate, then concentrated. 1.6 g of 3-chloro-6-methoxy [(1-ethoxycarbonyl-4-piperidyl-2) -2 ethyl] - 4 quinoline are thus obtained in the form of an oil.

0,38 g d'hydrure d'aluminium et de lithium sont introduits progressivement, par portions, dans 20 ml de tétrahydrofu- ranne sec, sous atmosphère d'azote. La suspension obtenue est refroidie à 0°C, puis on ajoute, goutte-à-goutte, une solution de 1,6 g de chloro-3 méthoxy-6 [(éthoxycarbonyl-1 pipéridyl-4)-2 éthyl ] -4 quinoléine dans le tétrahydrofu- ranne. Le milieu réactionnel est maintenu 3 heures au bain de glace, puis on ajoute, très lentement et dans l'ordre, 0,45 ml d'eau, 0,33 ml d'une solution aqueuse 5N d'hydroxyde de sodium, et 15 ml d'eau. Les produits minéraux insolubles formés sont séparés par filtration et lavés par deux fois 30 ml de chlorure de méthylène. Le filtrat et les lavages sont rassemblés, séchés sur sulfate de magnésium, puis concentrés par évaporation. Le résidu obtenu est fixé sur une colonne de silice et on élue avec un mélange chloroforme- diéthylamine

Figure imgb0012
. On obtient ainsi 0,9 g de chloro-3 méthoxy -6 [(méthyl-1 pipéridyl-4)-2 éthyl] -4 quinoléine, dont le chlorhydrate est amorphe.0.38 g of aluminum and lithium hydride are gradually introduced, in portions, into 20 ml of dry tetrahydrofuran, under a nitrogen atmosphere. The suspension obtained is cooled to 0 ° C., then a solution of 1.6 g of 3-chloro-6-methoxy-6 [(ethoxycarbonyl-1-piperidyl-4) -2 ethyl] -4 quinoline is added dropwise. in tetrahydrofuran. The reaction medium is maintained for 3 hours in an ice bath, then 0.45 ml of water, 0.33 ml of a 5N aqueous sodium hydroxide solution and very slowly and in order are added. ml of water. The insoluble mineral products formed are separated by filtration and washed with twice 30 ml of methylene chloride. The filtrate and the washes are combined, dried over magnesium sulphate, then concentrated by evaporation. The residue obtained is fixed on a silica column and eluted with a chloroform-diethylamine mixture
Figure imgb0012
. 0.9 g of 3-chloro-methoxy -6 [(1-methyl-piperidyl-4) -2 ethyl] -4 quinoline is thus obtained, the hydrochloride of which is amorphous.

Spectre R.M.N. du produit obtenu :

  • - aromatiques δ: 7 - 8,7 ppm
  • - CH2N et CH2Ar δ: 2,4 - 3,4 ppm
  • - CH3O δ: 3,9 ppm ppm
NMR spectrum of the product obtained:
  • - aromatic δ: 7 - 8.7 ppm
  • - CH2N and CH 2 Ar δ: 2.4 - 3.4 ppm
  • - CH 3 O δ: 3.9 ppm ppm

PROPRIETES PHARMACOLOGIQUESPHARMACOLOGICAL PROPERTIES AFFINITE POUR LES SITES RECEPTEURS CEREBRAUX DES BENZODIA-ZEPINESAFFINITY FOR THE CEREBRAL RECEPTOR SITES OF BENZODIA-ZEPINES

Cette affinité est mesurée par l'aptitude des produits à déplacer le Diazépam tritié (3H Diazépam) de son site de liaison et est exprimée par une valeur K., en micromoles (µM), qui est calculée par la formule :

Figure imgb0013
This affinity is measured by the ability of the products to displace tritiated Diazepam ( 3 H Diazepam) from its binding site and is expressed by a K. value, in micromoles (μM), which is calculated by the formula:
Figure imgb0013

dans laquelle C représente la concentration de 3H Diazépam, K une constante d'affinité égale à 2,74 µM et IC 50 la concentration nécessaire pour obtenir une inhibition de 50 % de la liaison du 3H Diazépam.in which C represents the concentration of 3 H Diazepam, K an affinity constant equal to 2.74 μM and IC 50 the concentration necessary to obtain a 50% inhibition of the binding of 3 H Diazepam.

Les produits ont été testés selon le protocole de MOHLER et coll., Life Science, 1977, 20, 2101. On a obtenu les résultats suivants :

Figure imgb0014
The products were tested according to the protocol of MOHLER et al., Life Science, 1977, 20, 2101. The following results were obtained:
Figure imgb0014

PROPRIETES TOXICOLOGIQUESTOXICOLOGICAL PROPERTIES

Les toxicités aiguës des composés selon l'invention ont été déterminées chez la souris mâle CD1 (Charles RIVER) par voie orale. Les DL50 ont été calculés, après 3 jours d'observation, par la méthode cumulative de J.J. REED et H. MUENCH (Amer. J. Hyg. 1938, 27, 493).The acute toxicities of the compounds according to the invention were determined in the male CD 1 mouse (Charles RIVER) orally. The LD50s were calculated, after 3 days of observation, by the cumulative method of JJ REED and H. MUENCH (Amer. J. Hyg. 1938, 27, 493).

Les composés selon l'invention se comportent comme des substances relativement peu toxiques chez la souris, puisque les DL50 des composés se situent entre 200 et 1000 mg/kg.The compounds according to the invention behave like relatively non-toxic substances in mice, since the LD50 of the compounds are between 200 and 1000 mg / kg.

UTILISATION THERAPEUTIQUETHERAPEUTIC USE

Les composés de l'invention et leurs sels pharmaceutiquement acceptables peuvent être utilisés en thérapeutique humaine, sous forme de comprimés, capsules, gélules, suppositoires, solutions ingérables ou injectables, etc... comme hypnotiques, anticonvulsivants et pour le traitement des états d'anxiété et de divers états psychonévrotiques.The compounds of the invention and their pharmaceutically acceptable salts can be used in human therapy, in the form of tablets, capsules, capsules, suppositories, ingestible or injectable solutions, etc. as hypnotics, anticonvulsants and for the treatment of states of anxiety and various psychoneurotic states.

La posologie dépend des effets recherchés et de la voie d'administration utilisée. Par exemple, par voie orale, elle peut être comprise entre 5 et 250 mg de substance active par jour, avec des doses unitaires allant de 1 à 50 mg.The dosage depends on the desired effects and the route of administration used. For example, orally, it can be between 5 and 250 mg of active substance per day, with unit doses ranging from 1 to 50 mg.

Claims (8)

1. Composés de formule générale :
Figure imgb0015
dans laquelle X est fixé en position 5, 6, 7 ou 8 sur le cycle de la quinoléine et représente un atome d'hydrogène ou d'halogène, ou un groupe alkyle, alcoxy ou alkylthio ayant 1 à 4 atomes de carbone, l'un des substituants R1 et R2 est un atome d'hydrogène, un groupe alkyle ayant 1 à 4 atomes de carbone, un groupe phényle ou un groupe phényle substitué par un ou deux substituants pris parmi les atomes d'halogène, les groupes alkyle, alcoxy ou alkylthio ayant 1 à 4 atomes de carbone, le groupe trifluorométhyle, le groupe nitro, le groupe amino et le groupe amino substitué par un ou deux groupes alkyle ayant un ou deux atomes de carbone,
et l'autre est un groupe de formule :
Figure imgb0016
dans laquelle n est un nombre entier égal à 1, 2 ou 3, R est un atome d'hydrogène ou un groupe alkyle ayant 1 à 4 atomes de carbone, et le radical (CH2)n est fixé en position 2, 3 ou 4 sur le cycle pipéridinique, et leurs sels d'addition avec les acides minéraux ou organiques.
1. Compounds of general formula:
Figure imgb0015
in which X is fixed in position 5, 6, 7 or 8 on the quinoline ring and represents a hydrogen or halogen atom, or an alkyl, alkoxy or alkylthio group having 1 to 4 carbon atoms, the one of the substituents R 1 and R 2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a phenyl group or a phenyl group substituted by one or two substituents chosen from halogen atoms, alkyl groups , alkoxy or alkylthio having 1 to 4 carbon atoms, the trifluoromethyl group, the nitro group, the amino group and the amino group substituted by one or two alkyl groups having one or two carbon atoms,
and the other is a group of formula:
Figure imgb0016
in which n is an integer equal to 1, 2 or 3, R is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and the radical (CH 2 ) n is fixed in position 2, 3 or 4 on the piperidine cycle, and their addition salts with mineral or organic acids.
2. Composés selon la revendication 1 dans lesquels X est un atome d'hydrogène, R2 est un atome d'hydrogène ou un groupe méthyle ou phényle, et R est un groupe
Figure imgb0017
2. Compounds according to claim 1 in which X is a hydrogen atom, R 2 is a hydrogen atom or a methyl or phenyl group, and R is a group
Figure imgb0017
3. Composé selon la revendication 2 de formule :
Figure imgb0018
et ses sels d'addition avec les acides minéraux ou organiques.
3. Compound according to claim 2 of formula:
Figure imgb0018
and its addition salts with mineral or organic acids.
4. Procédé de préparation des composés selon la revendication 1 pour lesquels R est un atome d'hydrogène, caractérisé en ce que l'on fait réagir le dichlorocarbène : CCl2 sur un dérivé de l'indole de formule :
Figure imgb0019
ou
Figure imgb0020
et hydrolyse le composé de formule :
Figure imgb0021
ou
Figure imgb0022
ainsi obtenu, X et n ayant dans les formules (II), (II bis), (III) et (III bis) les mêmes significations que dans la formule (I), et R'1 et R'2 représentant un atome d'hydrogène, un groupe alkyle ayant 1 à 4 atomes de carbone, un groupe phényle ou un groupe phényle substitué par un ou deux substituants pris parmi les atomes d'halogène, les groupes alkyle, alcoxy ou alkylthio ayant 1 à 4 atomes de carbone, CF3, N02, NH2 et le groupe amino substitué par un ou deux groupes alkyle ayant 1 ou 2 atomes de carbone.
4. Process for the preparation of the compounds according to claim 1 for which R is a hydrogen atom, characterized in that the dichlorocarbene: CCl 2 is reacted with an indole derivative of formula:
Figure imgb0019
or
Figure imgb0020
and hydrolyzes the compound of formula:
Figure imgb0021
or
Figure imgb0022
thus obtained, X and n having in formulas (II), (II bis), (III) and (III bis) the same meanings as in formula (I), and R ' 1 and R' 2 representing an atom d hydrogen, an alkyl group having 1 to 4 carbon atoms, a phenyl group or a phenyl group substituted by one or two substituents chosen from halogen atoms, alkyl, alkoxy or alkylthio groups having 1 to 4 carbon atoms, CF 3 , NO 2 , NH 2 and the amino group substituted by one or two alkyl groups having 1 or 2 carbon atoms.
5. Procédé de préparation des composés selon la revendication 1 pour lesquels R est un groupe alkyle ayant 1 à 4 atomes de carbone, caractérisé en ce que l'on fait réagir les composés selon la revendication 1 correspondants pour lesquels R est un atome d'hydrogène avec un agent alkylant.5. Method for preparing the compounds according to claim 1 for which R is an alkyl group having 1 to 4 carbon atoms, characterized in that the corresponding compounds according to claim 1 are reacted for which R is an atom hydrogen with an alkylating agent. 6. Procédé de préparation des composés selon la revendication 1 pour lesquels R est un groupe alkyle ayant 1 à 4 atomes de carbone, caractérisé en ce que l'on fait réagir les composés selon la revendication 1 correspondants pour lesquels R est un atome d'hydrogène avec un composé de formule
Figure imgb0023
dans laquelle Z représente un groupe alkyle ayant 1 à 3 atomes de carbone ou un groupe alcoxy bas, et réduit au moyen d'un hydrure les composés de formule :
Figure imgb0024
ou
Figure imgb0025
ainsi obtenus, X et n ayant dans les formules (IV) et (IV bis) les mêmes significations que dans la formule (I), et R'1 et R'2 représentant un atome d'hydrogène, un groupe alkyle ayant 1 à 4 atomes de carbone, un groupe phényle ou un groupe phényle substitué par un ou deux substituants pris parmi les atomes d'halogène, les groupes alkyle, alcoxy ou alkylthio ayant 1 à 4 atomes de carbone, CF3, NO2, NH2 et le groupe amino substitué par un ou deux groupes alkyle ayant 1 ou 2 atomes de carbone.
6. Process for the preparation of the compounds according to claim 1 for which R is an alkyl group having 1 to 4 carbon atoms, characterized in that the corresponding compounds according to claim 1 are reacted for which R is an atom hydrogen with a compound of formula
Figure imgb0023
in which Z represents an alkyl group having 1 to 3 carbon atoms or a low alkoxy group, and reduced by means of a hydride the compounds of formula:
Figure imgb0024
or
Figure imgb0025
thus obtained, X and n having in the formulas (IV) and (IV bis) the same meanings as in the formula (I), and R ' 1 and R' 2 representing a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a phenyl group or a phenyl group substituted by one or two substituents chosen from halogen atoms, alkyl, alkoxy or alkylthio groups having 1 to 4 carbon atoms, CF 3 , NO 2 , NH 2 and the amino group substituted by one or two alkyl groups having 1 or 2 carbon atoms.
7. Médicament, particulièrement utile comme hypnotique, anticonvulsivant et pour le traitement des états d'anxiété et des états psychonévrotiques, caractérisé en ce qu'il contient, en tant que principe actif, un composé répondant à la formule (I) de la revendication 1 ou un sel d'un tel composé avec un acide pharmaceutiquement acceptable.7. Medicament, particularly useful as hypnotic, anticonvulsant and for the treatment of anxiety states and psychoneurotic states, characterized in that it contains, as active principle, a compound corresponding to formula (I) of claim 1 or a salt of such a compound with a pharmaceutically acceptable acid. 8. Médicament selon la revendication 7, caractérisé en ce qu'il contient, comme principe actif, le composé de formule :
Figure imgb0026
ou un sel de ce composé avec un acide pharmaceutiquement acceptable.
8. Medicament according to claim 7, characterized in that it contains, as active principle, the compound of formula:
Figure imgb0026
or a salt of this compound with a pharmaceutically acceptable acid.
EP81400283A 1980-03-07 1981-02-24 3-chloroquinoline derivatives, processes for their preparation and medicaments containing them Expired EP0035925B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8005152A FR2477544A1 (en) 1980-03-07 1980-03-07 NOVEL CHLORO-3 QUINOLINE DERIVATIVES, PROCESSES FOR THEIR PREPARATION, AND THEIR USE AS MEDICAMENTS
FR8005152 1980-03-07

Publications (2)

Publication Number Publication Date
EP0035925A1 true EP0035925A1 (en) 1981-09-16
EP0035925B1 EP0035925B1 (en) 1984-12-05

Family

ID=9239431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400283A Expired EP0035925B1 (en) 1980-03-07 1981-02-24 3-chloroquinoline derivatives, processes for their preparation and medicaments containing them

Country Status (10)

Country Link
US (2) US4405789A (en)
EP (1) EP0035925B1 (en)
JP (1) JPS56139482A (en)
AT (1) AT376217B (en)
AU (1) AU540680B2 (en)
CA (1) CA1167444A (en)
DE (1) DE3167536D1 (en)
DK (1) DK101481A (en)
FR (1) FR2477544A1 (en)
NO (1) NO810776L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562832A1 (en) * 1992-03-23 1993-09-29 Sankyo Company Limited Indole and indazole derivatives, for the treatment and prophylaxis of cerebral disorders, their preparation and their use

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495470A1 (en) * 1980-12-05 1982-06-11 Pharmindustrie NEW MEDICAMENTS BASED ON (QUINOLYL-4) -1 (PIPERIDYL-4) -2 ETHANOL OR (QUINOLYL-4) -1 (PIPERIDYL-4) -3 PROPANOL DERIVATIVES
US5240942A (en) * 1990-07-10 1993-08-31 Adir Et Compagnie Piperidine, tetrahydropyridine and pyrrolidine compounds
JP2008545008A (en) * 2005-06-30 2008-12-11 プロシディオン・リミテッド GPCR agonist

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2354771A1 (en) * 1976-06-18 1978-01-13 Mar Pha Etu Expl Marques ((QUINOLYL-4) -3 PROPYL-1) -4 PIPERIDINES, THEIR PREPARATION AND THEIR USE AS MEDICINAL PRODUCTS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2354771A1 (en) * 1976-06-18 1978-01-13 Mar Pha Etu Expl Marques ((QUINOLYL-4) -3 PROPYL-1) -4 PIPERIDINES, THEIR PREPARATION AND THEIR USE AS MEDICINAL PRODUCTS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562832A1 (en) * 1992-03-23 1993-09-29 Sankyo Company Limited Indole and indazole derivatives, for the treatment and prophylaxis of cerebral disorders, their preparation and their use

Also Published As

Publication number Publication date
DK101481A (en) 1981-09-08
EP0035925B1 (en) 1984-12-05
AU540680B2 (en) 1984-11-29
FR2477544B1 (en) 1983-10-21
ATA63381A (en) 1984-03-15
US4493838A (en) 1985-01-15
DE3167536D1 (en) 1985-01-17
AU6814381A (en) 1981-09-10
NO810776L (en) 1981-09-08
FR2477544A1 (en) 1981-09-11
US4405789A (en) 1983-09-20
JPS56139482A (en) 1981-10-30
CA1167444A (en) 1984-05-15
AT376217B (en) 1984-10-25

Similar Documents

Publication Publication Date Title
EP0202164B1 (en) (benzoyl-4-piperidino)-2-phenyl-1-alkanol derivatives, their preparation and their use as medicines
EP0094271B1 (en) Arene and heteroarene carboxamide derivatives, process for their preparation and medicaments containing them
EP0487408A1 (en) Oxazolopyridine derivatives, process for their preparation and pharmaceutical compositions comprising the same
LU79761A1 (en) PROCESS FOR THE PREPARATION OF NEW PHTALAZINE COMPOUNDS AND A PHARMACEUTICAL COMPOSITION CONTAINING THEM
EP0042781B1 (en) 1-(4 quinolyl), 2- or 3- (2- or 3- piperidyl or pyrrolidinyl) ethanone or propanone, process for their preparation and their use as medicaments
EP0506532A1 (en) Indole derivatives, process for their preparation and medicaments containing them
EP0172096A1 (en) 3-Acylaminomethylimidazo [1,2-a] pyridines, their preparation and therapeutical use
EP0110781A1 (en) Substituted (amino-2-ethyl)-6-benzoxazolinones, their preparation and a pharmaceutical composition containing them
EP0217700A1 (en) Benzimidazole derivatives, their preparation and their therapeutical use
FR2493315A1 (en) PIPERAZINE DERIVATIVE, PROCESS FOR PREPARATION AND ANALGESIC COMPOSITION CONTAINING THE SAME
EP0138721B1 (en) Benzenesulphonyl lactams, process for their preparation and their use as active ingredients in pharmaceutical compounds
EP0031753A1 (en) 2-(4-Piperidyl)-1-(4-quinolyl)-ethanone derivatives, intermediates in and process for their preparation, and their use as medicines
EP0024960A2 (en) Substituted heterocyclic phenoxy amines, their preparation method and their use as local anaesthetics
FR2525597A1 (en) N, N&#39;-SUBSTITUTED DI-DIAMINE POLYMETHYLENE, PROCESSES FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS COMPRISING THEM
EP0099303B1 (en) Benzothiopyranopyridinones and their salts, their preparation and use as medicaments, and compositions containing them
CA1167444A (en) 3-chloroquinoline derivatives and process for their preparation and their medical applications
EP0042322A1 (en) Indene derivatives, their preparation and medicines containing them
EP0275742B1 (en) 5-hydroxymethyl derivatives of 2-oxazolidinones, their preparation and their therapeutical use
CA2045849A1 (en) Oxazolopyridines derivatives, their preparation process and pharmaceutical compositions containing them
EP0259227A1 (en) Benzhydryloxyethyl piperidine derivatives, process for their preparation and pharmaceutical compositions containing them
EP0119107A1 (en) Derivatives of bicyclo(4.2.0)octatriene-1,3,5, their preparation and their therapeutical application
KR910003711B1 (en) Process for preparing 2-(n-pyrrolidino)-3-isobutoxy-n-substituted phenyl-n-benzylpropylamines
EP0050072B1 (en) Cyclopropyl methyl piperazines, process for their preparation and their use in therapeutics
EP0100257B1 (en) Aminoalkyl naphthalene derivatives, their salts, process for their preparation and the therapeutical use of these derivatives and salts
EP0259228B1 (en) 5-aminomethyl-2-oxazolidinone derivatives, their preparation and their therapeutical use

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19810227

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI LU NL SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PHARMUKA LABORATOIRES

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI LU NL SE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19841231

Year of fee payment: 5

REF Corresponds to:

Ref document number: 3167536

Country of ref document: DE

Date of ref document: 19850117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19850228

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19860109

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19870228

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19880225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19880229

Ref country code: CH

Effective date: 19880229

BERE Be: lapsed

Owner name: PHARMUKA LABORATOIRES

Effective date: 19880228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19880901

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19881028

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19881101

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19881118

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19890228

EUG Se: european patent has lapsed

Ref document number: 81400283.8

Effective date: 19880927